Method of forming mountings for metal leaf.



F. W. RAUSKOLB. METHOD OF FORMING MOUNTINGS FOR METAL LEAF.

APPLICATION FILED SEPT. 3, 1912.

1,072,992, Patented Sept 9, 1913.

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Z dwmd @M FRED "WA RAUSIKOLB, UF MEDFORD, MASSACHUSETTS.

Km]! OIEFOBMINGMOUNTINGS FOB METAL LEAF.

-Speeifieation of Letters Patent. -Pate'ntzgd S pt 9 1913 Application filed September 3, i912. Serial No. 718,400.

To all whom it may concern Be it knownthat I, Fran W; RAUsKoLB, acitizen of the United States of America,

and a resident of Medford, in the county .of Middlesex and State of Massachusetts, have invented certain-newand useful Improve mentsin Methods of Forming Mountings for Metal Leaf, offwhieh the following is a a specification.

- This invention relates .toa method of.

forming mountings for metal leaf, the particular object of the present invention be ing toprovide a mountingfor: metal. leaf and especially gold leaf which can be readily handled and whichJmay be used in the trade without, the necessity of applying sizing to the leatheror other material-to whichthe leaf is to be afiixed. H

.= .Heretofore iii-affixing gold leaf=and other metal leaves to leather ,and other materials i-t-has been necessary toapply to the material seizing and'then overlay: the sizingv with a layer of-metal leaf,- after which the necessarycharacters are afiixed to the material by means of a heated die; This-method isi objectionable for severalareasons, one .of

thewprineipal of- Whichisethat the sizing applied to the-material often. causes the material to be disfiguredwhileathe metal leaf surrounding the characters and not-affixed tothe material by: means of the die must be removed from the characters affixed to :theyleather :or other material, and thispor- 2 tion of the metaldeaf thus removed is scat teredand lost. -Whe1'e the metal leaf used is gold the. material thus lost is of considerable value. :Moreover, in the handling of I the metal leaf by this process, great care haste be exercised to keepqthemetal layer .fiat'an'd free from'wrinkles. ,To overcome these objections the metal leaf is afiixedi by pressure .to asuitahlesheet .of prepared paper, preferably araifin paper, and then the;

entire surface of the metal leafjs subjected to a spray of sizing which-Will be only affected by intense heat: thereon, By this means the met-a1 leaf is always preserved in asmooth-condition .overthe surface ofthe' ing of sizing, and also in the method of formin this new article of manufacture.

Of t e drawings: Figure 1 represents a sheet of paper.' Fig. 2 represents a sheet of metal foil. Fig. 3 represents a sheet of paper having the sheet of metal foil spread thereover. Fig. 4 represents, in diagram greatly enlarged, the edges of asheet of paper, a sheet ofmetal foil superimposed thereon, and. a sheet of prepared, paper superimposed upon saidmetal foil. 1 Fig. 5 repre sents a sheet of the prepared paper having a sheet :ofinetal foil aiiixed thereto by pressure, and showing in'the upper left hand corner. a coating of sizing applied thereto. Fig. 6 represents, an enlar ed reverse View of a portion of thesheet .0? prepared paper having the metal foil .aflixed thereto, and

showing its-condition after a plurality of oharactershave been removed therefrom by means of a heated die. Fig. 7 represents a portion: ofa book showing thereon a plurality ofcharacters in metal leaf removed from said sheet of metal leaf and afi ixed thereto. a

Similar characters designate like parts throughout the several figures of the drawings. lIn. the drawings, 10 represents a sheet of paper. such as is ordinarily used upon which to spread the sheetof metal foil 11. In the preparation of the improved mounting a. sheet of :metal foil 11. is spread upon one of the sheets of paperlO' and then a sheet of previously prepared paper '12 is superimposed thereon as indicated in Fig. 4: of the drawings." This-sheetof paper 12 is preferably treated to a paraffin bath so that it is transparent; Thethree sheets are then subjected to pressure so that the sheet of metal foil 11 will adhere firmly to the sheet pile, each of these sheets having adhering thereto a sheet of metal foil 11, and the sheets 10 are removed therefrom. The whole face of the metal foil 11 and that portion of the sheet of the parafiin paper 12 exposed is treated to a spray of suitable sizhand corner of Fig. 5. This sizing ma-- terial may be of any suitable composition that will remain impervious to moisture and is adapted to be brought into a tacky condition only when subjected to intense heat. These mountings when thus prepared are ready for the market and adapted for use when desired.

lVhen it is desired to apply characters to leather or other material the sheet of metal leaf is laid upon the material and a heated die having the necessary characters thereon is quickly applied to the rear face of the sheet of parafin paper. Owing to the transparency of this sheet 12 it is ossible to work closely to the edges of the s eet of metal leaf and also to other characters which have been previously removed therefrom. This application of the heated die will affect only that portion of the sizing directly opposite the characters upon the die and will cause that portion of the metal leaf to be firmly fixed to the leather or other material. When this has been accomplished the sheet is removed from the material and all of the metal leaf upon the sheet of paraffin paper 12 will be removed therewith except that portion thereof which has been fixed to the material by the action of the heated die.

When the mounting has been used several times the appearance of the mounting will be similar to that indicated in Fig. 6 of the drawings, and the appearance of the leather or other material to which the metal leaf has been applied will be similar to that shown in Fig. 7 of the drawings with no disfigurement about "the characters of sizing, such as is usually found when the characters have been applied in the usual manner.

It is obvious that by means of this mounting it is unnecessary to cut up the sheets of metal foil into small pieces as has been customary, and by this means much waste of material is obviated. Moreover, all the metal leaf not used remains affixed tothe sheet of paraffin paper, and when the entire surface of the mounting has been utilized these sheets are accumulated and burned and the metal remaining thereon is thereby saved and may be returned to the manufacturer to be formed into new sheets of metal foil. While any suitable sizing may be utilized, one composition thereof adapted ing material as shown at 13 in the upper left for this use may be mentioned, viz -two ounces gelatin, one quart of water, two ounces glue, preferably fish glue, and one and one-half ounces of sal ammoniac. These ingredients are thoroughly mixed to form a bath and preferably in order not to injure the metal leaf when fixed to the sheet of parafiin paper by pressure, this composi tion is sprayed over the metal leaf by means of any suitable sprayin device,such as the ordinary air brush. hen this coating of sizing has been thus sprayed over the surface of metal foil it is permitted to thoroughly dry and then the mounting is ready for use. I

It has been found in practice that when characters of metal leaf are applied to material by this improved method a sharper outline thereof is secured than it has been possible to attain by the usual methods in general use.

It is believed that the many advantages of an article constructed in accordance with the method hereinbefore described will be fully apparent without any further description.

Having thus described my invention, I claim:

1. The process of applying old leaf consisting of supporting the gold leaf upon a sheet having a non-adhesive coating to receive said gold leaf; protecting the outer face of 'said gold leaf with a coating of adhesive sizing sprayed thereon, and subjecting said gold leaf and said supporting sheet to a heated tool applied with pressure to the rear face of said supporting sheet against the work to receive the gold leaf.

2. The recess of applying gold leaf consisting of affixing the gold leaf to be applied to a waxed supporting sheet, protecting the outer face of said gold leaf from abrasion with the work to receive said gold leaf by coating said gold leaf with a fine coat of adhesive sizing, and applying said gold leaf to the work by subjecting said sheet and said gold leaf to a stamping operation.

Signed by me at 4 Post Oifice Square, Boston, Mass, this 29th day of August, 1912.

FRED W. RAUSKOLB. 

